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Finding the Fourth Proportional to 91,191.70, 136,792.54 and 37,889.07

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Solution

The fourth proportional to 91,191.70, 136,792.54 and 37,889.07 is: 56,835.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,191.70 : 136,792.54 = 37,889.07 : x
  2. Step 2: Convert to fraction form
    91,191.70/136,792.54 = 37,889.07/x
  3. Step 3: Cross multiply
    91,191.70x = 136,792.54 × 37,889.07
  4. Step 4: Simplify right side
    91,191.70x = 5,182,941,934.09
  5. Step 5: Solve for x
    x = 5,182,941,934.09/91,191.70
  6. Step 6: Final answer
    x = 56,835.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.